<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" />
    <title>index首页</title>
    <link rel="stylesheet" href="./index.css">
  </head>
  <body>
    <div class="box">
      <div id="HH">00</div>
      <div>:</div>
      <div id="mm">00</div>
      <div>:</div>
      <div id="ss">00</div>
    </div>
    <script type="text/javascript" src="./index.js"></script>
  </body>
</html>